CN105297757A - Construction method for quicksand layer pile foundation - Google Patents
Construction method for quicksand layer pile foundation Download PDFInfo
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- CN105297757A CN105297757A CN201510682309.8A CN201510682309A CN105297757A CN 105297757 A CN105297757 A CN 105297757A CN 201510682309 A CN201510682309 A CN 201510682309A CN 105297757 A CN105297757 A CN 105297757A
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Abstract
The invention discloses a construction method for a quicksand layer pile foundation. The construction method comprises the following steps that S10 the depth of a quicksand layer around the pile portion is surveyed, the length of the quicksand layer capable of penetrating through a steel pile casing is determined according to the survey result, and the steel pile casing is prefabricated; S20 the whole steel pile casing is embedded in the pile portion with the adoption of a vibratory hammer; S30 a pore is drilled and formed in the steel pile casing, a reinforcement cage is installed in a pore after the pore is formed, and the reinforcement cage is positioned on the pore opening after the reinforcement cage is installed; and S40 a conduit is installed and fixed in the pore, concrete is injected into the pore through the conduit after the pore is cleaned up, the steel pile casing is lifted immediately after the concrete is injected to the top face of the steel pile casing, the lifting time of the steel pile casing is controlled in the initial set time of the concrete, and the concrete sets and forms the pile foundation after the steel pile casing is lifted out totally. According to the construction method for the quicksand layer pile foundation, the quicksand layer pile pore can be prevented from collapsing effectively, and sand layer loss and the exceeding square amount of the concrete in the pore are controlled well, so that the use amount of the concrete is reduced, mud treatment and discharging are decreased, the mud is prevented from polluting the environment, the construction cost is reduced, the construction period is short, and the benefit is high.
Description
Technical field
The present invention is used for piling Technology field, particularly relates to a kind of drifting sand layer pile base construction method.
Background technology
Whole joint steel pile casting is buried in utilization underground, is the common method preventing stake holes from caving in.But usually steel pile casting verticality, axial location, length, promotion time, promote the more difficult control of speed, easily cause that stake holes off normal, pile verticality are defective and concrete piles is off quality, the duration delays length, and cost increases.
Summary of the invention
For solving the problem, the invention provides a kind of drifting sand layer pile base construction method that effectively can prevent drifting sand layer geology stake holes collapse hole.
The technical solution adopted for the present invention to solve the technical problems is: a kind of drifting sand layer pile base construction method, comprises the following steps:
S10. survey the degree of depth of stake position place drifting sand layer, and determine according to exploration result the length passing steel pile casting, pre-manufactured steel casing;
S20. vibrating hammer is adopted to bury whole joint steel pile casting underground at stake position place;
S30. drilling and forming hole in steel pile casting, installs reinforcing cage after pore-forming in hole, is located by reinforcing cage after installing in aperture;
S40., conduit is installed in hole and fixing, behind clear hole by conduit to concrete perfusion in hole, pour into steel pile casting end face, promote steel pile casting immediately, the promotion time controling of steel pile casting completes within the concrete initial set time, and after steel pile casting is promoted out completely, concrete solidifies formation pile foundation in hole.
Be further used as the improvement of technical solution of the present invention, also step S11 is comprised between step S10 and step S20, the construction plant at step S11. smooth stake position place, guarantee that sidewalk is unimpeded, check and clear up the stone of underground, place, stake position, at smooth good place surveying setting-out, draw the cross fender pile established and can control steel pile casting center and verticality.
Be further used as the improvement of technical solution of the present invention, in step S30, in drilling and forming hole process, record is good through hole depth during drifting sand layer, after lengthening, burying underground, then proceeds to creep into according to layer of sand actual grade to steel pile casting length.
Be further used as the improvement of technical solution of the present invention, in step S40, conduit is installed after waterproof test is qualified, when installing conduit in hole, from bottom hole pitch from being 30cm-50cm at the bottom of the pipe of conduit.
Be further used as the improvement of technical solution of the present invention, in step S40, press during clear hole at the bottom of wind to hole and carry out hole clearly, ensure that at the bottom of hole, slagging thickness is less than 5cm.
Be further used as the improvement of technical solution of the present invention; in step S40; concrete perfusion is to steel pile casting end face; end face laitance, body refuse are all extruded; RC, in concrete, again passes through tremie concrete after promoting steel pile casting 1m with vibrating hammer, guarantees the outer cavity of concrete energy filler opening; and so forth, until steel pile casting promotes out ground completely.
Be further used as the improvement of technical solution of the present invention, in step S40, lower than at the bottom of steel pile casting at least 2 meters at the bottom of conduit, after steel pile casting promotes out ground completely, within the concrete initial set time, extract conduit out.
Beneficial effect of the present invention: pass through drift sand formation carry out pile holes protecting wall by burying long steel pile casting underground, vibrating hammer is adopted to promote steel pile casting to complete the method for concrete perfusion, effectively can prevent drifting sand layer geology stake holes collapse hole, in the good control hole of energy, layer of sand runs off and concrete super side's amount, decreases concrete and slurry consumption, decrease mud conditioning discharge, avoid mud contamination surrounding enviroment, significantly reduce construction cost, the duration is short, high efficiency, avoids human and material resources, financial resources loss.
Detailed description of the invention
The invention provides a kind of drifting sand layer pile base construction method, comprise the following steps:
S10. survey the degree of depth of stake position place drifting sand layer, and determine according to exploration result the length passing steel pile casting, pre-manufactured steel casing;
S11. the construction plant at smooth stake position place, construction material requested, facility are put in smooth enough broad place, guarantee that sidewalk is unimpeded, check and clear up the stone of underground, place, stake position, at smooth good place surveying setting-out, draw the cross fender pile established and can control steel pile casting center and verticality;
S20. adopt vibrating hammer to bury whole joint steel pile casting underground at stake position place, by cross fender pile, adjustment is carried out to steel pile casting verticality and center and control;
S30. drilling and forming hole in steel pile casting, in drilling and forming hole process, record is good through hole depth during drifting sand layer, after lengthening steel pile casting length according to layer of sand actual grade, burying underground, then proceed to creep into, after pore-forming, in hole, reinforcing cage is installed, reinforcing cage merogenesis is installed, adopt single-selded lap joint, after installing, reinforcing cage is located in aperture, in order to avoid there is floating cage phenomenon in concrete perfusion process;
S40., conduit is installed in hole and fixes, described conduit is installed after waterproof test is qualified, from bottom hole pitch from being 30cm-50cm at the bottom of the pipe of conduit, clear hole, press during clear hole at the bottom of wind to hole and carry out hole clearly, ensure that at the bottom of hole, slagging thickness is less than 5cm, behind clear hole by conduit to concrete perfusion in hole, perfusion is to steel pile casting end face, by end face laitance, body refuse all extrudes, after having filled with concrete, promote steel pile casting and conduit immediately, the promotion time controling of steel pile casting and conduit completes within the concrete initial set time, after steel pile casting and conduit are promoted out completely, concrete solidifies formation pile foundation in hole.
In step S40, there is deviation to geological condition, the situation that outside hole, layer of sand runs off; after adopting concrete to fill casing discharge mud, sediment; not Lumen catheter, lower than at the bottom of steel pile casting at least 2 meters at the bottom of conduit, then passes through tremie concrete after promoting 1m steel pile casting with vibrating hammer again; guarantee the outer cavity of concrete energy filler opening; promote steel pile casting should vertically, speed at the uniform velocity, should not be too fast, allow casing inner concrete be diffused into outside hole uniformly; and so forth, until steel pile casting promotes out ground completely.
In the present invention, adopt vibrating hammer to bury whole joint steel pile casting underground and pass through drift sand formation and carry out retaining wall to stake holes, boring procedure is smooth, and effectively prevent collapse hole, cost is low, and efficiency is high, and the duration is short, easy to operate.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (7)
1. a drifting sand layer pile base construction method, is characterized in that comprising the following steps:
S10. survey the degree of depth of stake position place drifting sand layer, and determine according to exploration result the length passing steel pile casting, pre-manufactured steel casing;
S20. vibrating hammer is adopted to bury whole joint steel pile casting underground at stake position place;
S30. drilling and forming hole in steel pile casting, installs reinforcing cage after pore-forming in hole, is located by reinforcing cage after installing in aperture;
S40., conduit is installed in hole and fixing, behind clear hole by conduit to concrete perfusion in hole, pour into steel pile casting end face, promote steel pile casting immediately, the promotion time controling of steel pile casting completes within the concrete initial set time, and after steel pile casting is promoted out completely, concrete solidifies formation pile foundation in hole.
2. drifting sand layer pile base construction method according to claim 1, it is characterized in that: between step S10 and step S20, also comprise step S11, the construction plant at step S11. smooth stake position place, guarantee that sidewalk is unimpeded, check and clear up the stone of underground, place, stake position, at smooth good place surveying setting-out, draw the cross fender pile established and can control steel pile casting center and verticality.
3. drifting sand layer pile base construction method according to claim 1, it is characterized in that: in step S30, in drilling and forming hole process, record is good through hole depth during drifting sand layer, after lengthening steel pile casting length according to layer of sand actual grade, burying underground, then proceed to creep into.
4. drifting sand layer pile base construction method according to claim 1, it is characterized in that: in step S40, conduit is installed after waterproof test is qualified, when installing conduit in hole, from bottom hole pitch from being 30cm-50cm at the bottom of the pipe of conduit.
5. drifting sand layer pile base construction method according to claim 1, is characterized in that: in step S40, presses at the bottom of wind to hole and carry out hole clearly during clear hole, ensures that at the bottom of hole, slagging thickness is less than 5cm.
6. drifting sand layer pile base construction method according to claim 1; it is characterized in that: in step S40; concrete perfusion is to steel pile casting end face; end face laitance, body refuse are all extruded; RC, in concrete, again passes through tremie concrete after promoting steel pile casting 1m with vibrating hammer, guarantees the outer cavity of concrete energy filler opening; and so forth, until steel pile casting promotes out ground completely.
7. drifting sand layer pile base construction method according to claim 6, is characterized in that: in step S40, lower than at the bottom of steel pile casting at least 2 meters at the bottom of conduit, after steel pile casting promotes out ground completely, within the concrete initial set time, extracts conduit out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682309.8A CN105297757A (en) | 2015-10-21 | 2015-10-21 | Construction method for quicksand layer pile foundation |
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| CN201510682309.8A CN105297757A (en) | 2015-10-21 | 2015-10-21 | Construction method for quicksand layer pile foundation |
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| CN105297757A true CN105297757A (en) | 2016-02-03 |
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| CN201510682309.8A Pending CN105297757A (en) | 2015-10-21 | 2015-10-21 | Construction method for quicksand layer pile foundation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894418A (en) * | 2017-02-28 | 2017-06-27 | 济南轨道交通集团有限公司 | A kind of metalling plants the running pulp administering method of prefabricated pile |
| CN107701109A (en) * | 2017-09-08 | 2018-02-16 | 浙江江南春建设集团有限公司 | The sand foundation of stone flour containing block bored concrete pile drilling preprocess method |
| CN108457267A (en) * | 2018-02-12 | 2018-08-28 | 中铁十八局集团有限公司 | A kind of basic forming hole method of railway sound barrier stake |
| CN109914397A (en) * | 2019-03-19 | 2019-06-21 | 重庆建筑工程职业学院 | Bridge Pile Foundation Construction method |
| CN110387879A (en) * | 2019-06-27 | 2019-10-29 | 中交第二航务工程局有限公司 | A kind of concrete filling pile construction method of hydraulic vibration hammer hidden pipe |
| CN110485453A (en) * | 2019-09-07 | 2019-11-22 | 北京华昊水利水电工程有限责任公司 | A kind of Pile-supported stand foundation structure and its construction method |
| CN110700247A (en) * | 2019-09-27 | 2020-01-17 | 中冶交通建设集团有限公司 | Construction method for cast-in-place pile to penetrate through quicksand layer |
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| JP2013241800A (en) * | 2012-05-22 | 2013-12-05 | Tetsudo Onda | Resistance pile for preventing foundation fluidization |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894418A (en) * | 2017-02-28 | 2017-06-27 | 济南轨道交通集团有限公司 | A kind of metalling plants the running pulp administering method of prefabricated pile |
| CN106894418B (en) * | 2017-02-28 | 2019-08-13 | 济南轨道交通集团有限公司 | A kind of metalling plants the running pulp administering method of prefabricated pile |
| CN107701109A (en) * | 2017-09-08 | 2018-02-16 | 浙江江南春建设集团有限公司 | The sand foundation of stone flour containing block bored concrete pile drilling preprocess method |
| CN108457267A (en) * | 2018-02-12 | 2018-08-28 | 中铁十八局集团有限公司 | A kind of basic forming hole method of railway sound barrier stake |
| CN109914397A (en) * | 2019-03-19 | 2019-06-21 | 重庆建筑工程职业学院 | Bridge Pile Foundation Construction method |
| CN110387879A (en) * | 2019-06-27 | 2019-10-29 | 中交第二航务工程局有限公司 | A kind of concrete filling pile construction method of hydraulic vibration hammer hidden pipe |
| CN110485453A (en) * | 2019-09-07 | 2019-11-22 | 北京华昊水利水电工程有限责任公司 | A kind of Pile-supported stand foundation structure and its construction method |
| CN110700247A (en) * | 2019-09-27 | 2020-01-17 | 中冶交通建设集团有限公司 | Construction method for cast-in-place pile to penetrate through quicksand layer |
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Application publication date: 20160203 |
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